package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/*

 */
public class CopyDemo2 {
    public static void main(String[] args) throws IOException {

        FileInputStream fis=new FileInputStream("blr.jpg");
        FileOutputStream fos=new FileOutputStream("blr_cp.jpg");
        long start=System.currentTimeMillis();
        byte[] data=new byte[1024*1000000000];
        while (fis.read(data)!=-1){
            fos.write(data);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕！"+(end-start)+"ms");
        fis.close();
        fos.close();


    }
}
